Audio Hum Removal

Audio Hum Removal | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Media
Input types: file, select, number, checkbox
Output type: file
Sample coverage: 4
API ready: Yes

Overview

The Audio Hum Removal tool eliminates unwanted electrical hum from audio recordings. It uses notch filters to target 50Hz/60Hz power line interference and their harmonics, delivering clean audio output for professional or personal use.

When to use

When recording audio in environments with electrical noise, such as near power lines or faulty equipment.
When post-processing interviews, podcasts, or voiceovers that have background hum from microphones or cables.
When restoring old recordings or field audio that suffer from persistent 50Hz/60Hz interference.

How it works

1Upload your audio file in a supported format like MP3, WAV, or AAC.
2Select the hum type preset (60Hz for Americas/Japan, 50Hz for Europe/Asia/Africa) or enter a custom frequency.
3Adjust settings including harmonics removal, filter width, and reduction depth to fine-tune the process.
4Download the cleaned audio in your chosen output format, such as MP3 or FLAC.

Use cases

Cleaning up podcast or interview recordings with microphone or interface hum.
Enhancing field recordings by removing environmental electrical noise from equipment.
Restoring vintage audio tapes, vinyl transfers, or old digital files with power line interference.

Examples

1. Podcast Interview Cleanup

Podcaster

Background

A podcaster recorded an interview in a home studio, but the audio interface introduced a constant buzzing sound.

Problem

The recording has a distracting 60Hz hum that lowers audio clarity and professionalism.

How to use

Upload the interview audio file, select the 60Hz preset, enable harmonics removal, and set a filter width of 2Hz to preserve voice quality.

Outcome

The hum is removed, resulting in a clean audio file ready for editing and publishing.

2. Field Recording Restoration

Sound Designer

Background

A sound designer captured ambient nature sounds outdoors, but nearby electrical equipment caused interference.

Problem

The audio has a 50Hz hum with harmonics, distorting the natural soundscape.

How to use

Use the custom frequency option to target 50Hz, adjust reduction depth to -40dB for stronger removal, and export as WAV for high fidelity.

Outcome

The electrical interference is eliminated, preserving the original ambient sounds for use in projects.

FAQ

What audio file formats can I upload?

The tool accepts common audio formats including MP3, WAV, AAC, M4A, OGG, Opus, and FLAC.

How do I choose between 50Hz and 60Hz presets?

Select based on your region's power line frequency: 60Hz for the Americas and Japan, 50Hz for Europe, Asia, and Africa.

What does the 'Include Harmonics' option do?

It removes higher frequency multiples of the base hum, such as 120Hz or 180Hz for 60Hz hum, for more thorough cleaning.

Can I process multiple audio files at once?

No, the tool processes one file at a time to ensure precise control over hum removal settings.

Will removing hum affect the original audio quality?

With careful settings like a narrow filter width (1-5Hz), it minimizes impact on desired audio while effectively reducing hum.

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Inputs

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Podcast Interview Cleanup

2. Field Recording Restoration

FAQ

Copyright-Free FLAC Audio Samples

Copyright-Free MP3 Audio Samples

Copyright-Free WAV Audio Samples

Copyright-Free Raw PCM Audio Samples

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